Calaveras County Flood Zone Locator Certain features within this application make use of popup windows. Please disable any popup-blocking utilities that you may have running. NOTICE This application should not be used as an authoritative source for determining whether or not specific streets, properties or buildings are within a Flood Hazard Area. You must contact the local building department before basing any legal decision on this information. This map is for use in administering the National Flood Insurance Program; it does not necessarily identify all areas subject to flooding, particularly from local drainage sources of small size, or all planimetric features outside Special Flood Hazard Areas. NOTES: Areas of special flood hazard (100-year flood) including Zones A, AE, AH, AO A99,V, VE, AND X. Boundaries of the floodways were computed at cross sections and interpolated between cross sections. The floodways were based on hydraulic considerations with regard to requirements of the Federal Emergency Management Agency. Floodway widths in some areas may be too narrow to show to scale. Floodway widths are provided in the Flood Insurance Study Report.